java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:03:05,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:03:05,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:03:05,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:03:05,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:03:05,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:03:05,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:03:05,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:03:05,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:03:05,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:03:05,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:03:05,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:03:05,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:03:05,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:03:05,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:03:05,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:03:05,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:03:05,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:03:05,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:03:05,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:03:05,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:03:05,070 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:03:05,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:03:05,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:03:05,071 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:03:05,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:03:05,072 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:03:05,072 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:03:05,072 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:03:05,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:03:05,073 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:03:05,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:03:05,074 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:03:05,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:03:05,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:03:05,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:03:05,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:03:05,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:03:05,075 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:03:05,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:03:05,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:03:05,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:03:05,076 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:03:05,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:03:05,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:05,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:03:05,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:03:05,077 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:03:05,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:03:05,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:03:05,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:03:05,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:03:05,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:03:05,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:03:05,146 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:03:05,146 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:03:05,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_2.c [2019-09-16 17:03:05,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9cfe992/a726ed1b3acc43b3a2c4adb2c56c78a7/FLAG3b2196323 [2019-09-16 17:03:05,660 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:03:05,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_2.c [2019-09-16 17:03:05,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9cfe992/a726ed1b3acc43b3a2c4adb2c56c78a7/FLAG3b2196323 [2019-09-16 17:03:06,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9cfe992/a726ed1b3acc43b3a2c4adb2c56c78a7 [2019-09-16 17:03:06,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:03:06,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:03:06,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:06,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:03:06,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:03:06,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f12acb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06, skipping insertion in model container [2019-09-16 17:03:06,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,066 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:03:06,086 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:03:06,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:06,257 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:03:06,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:06,280 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:03:06,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06 WrapperNode [2019-09-16 17:03:06,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:06,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:03:06,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:03:06,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:03:06,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... [2019-09-16 17:03:06,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:03:06,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:03:06,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:03:06,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:03:06,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:06,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:03:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:03:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:03:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:03:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:03:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:03:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:03:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:03:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:03:06,592 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:03:06,592 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 17:03:06,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:06 BoogieIcfgContainer [2019-09-16 17:03:06,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:03:06,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:03:06,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:03:06,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:03:06,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:03:06" (1/3) ... [2019-09-16 17:03:06,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d9b7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:06, skipping insertion in model container [2019-09-16 17:03:06,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:06" (2/3) ... [2019-09-16 17:03:06,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d9b7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:06, skipping insertion in model container [2019-09-16 17:03:06,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:06" (3/3) ... [2019-09-16 17:03:06,601 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2019-09-16 17:03:06,610 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:03:06,617 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:03:06,629 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:03:06,655 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:03:06,656 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:03:06,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:03:06,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:03:06,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:03:06,656 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:03:06,656 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:03:06,657 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:03:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-09-16 17:03:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 17:03:06,684 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:06,685 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:06,687 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:06,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:06,692 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2019-09-16 17:03:06,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:06,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:06,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:06,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:06,736 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:06,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:06,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:03:06,796 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:06,800 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:03:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:03:06,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:06,814 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-09-16 17:03:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:06,828 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-09-16 17:03:06,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:03:06,829 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-16 17:03:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:06,837 INFO L225 Difference]: With dead ends: 13 [2019-09-16 17:03:06,837 INFO L226 Difference]: Without dead ends: 13 [2019-09-16 17:03:06,839 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-16 17:03:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-16 17:03:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-16 17:03:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-16 17:03:06,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-09-16 17:03:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:06,869 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-16 17:03:06,869 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:03:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-16 17:03:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 17:03:06,870 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:06,870 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:06,870 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:06,871 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2019-09-16 17:03:06,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:06,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:06,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:06,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:06,873 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:06,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:06,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:03:06,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:06,983 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:03:06,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:03:06,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:03:06,984 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-16 17:03:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:07,037 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-09-16 17:03:07,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:03:07,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-16 17:03:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:07,040 INFO L225 Difference]: With dead ends: 11 [2019-09-16 17:03:07,041 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:03:07,042 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:03:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:03:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:03:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:03:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:03:07,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-09-16 17:03:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:07,044 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:03:07,044 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:03:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:03:07,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:03:07,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:03:07 BoogieIcfgContainer [2019-09-16 17:03:07,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:03:07,055 INFO L168 Benchmark]: Toolchain (without parser) took 1008.92 ms. Allocated memory was 136.3 MB in the beginning and 196.1 MB in the end (delta: 59.8 MB). Free memory was 84.2 MB in the beginning and 137.1 MB in the end (delta: -52.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:07,057 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:03:07,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.92 ms. Allocated memory is still 136.3 MB. Free memory was 84.0 MB in the beginning and 75.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:07,060 INFO L168 Benchmark]: Boogie Preprocessor took 121.48 ms. Allocated memory was 136.3 MB in the beginning and 196.1 MB in the end (delta: 59.8 MB). Free memory was 75.0 MB in the beginning and 174.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:07,061 INFO L168 Benchmark]: RCFGBuilder took 189.80 ms. Allocated memory is still 196.1 MB. Free memory was 174.0 MB in the beginning and 163.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:07,063 INFO L168 Benchmark]: TraceAbstraction took 457.07 ms. Allocated memory is still 196.1 MB. Free memory was 163.7 MB in the beginning and 137.1 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:07,070 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.92 ms. Allocated memory is still 136.3 MB. Free memory was 84.0 MB in the beginning and 75.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.48 ms. Allocated memory was 136.3 MB in the beginning and 196.1 MB in the end (delta: 59.8 MB). Free memory was 75.0 MB in the beginning and 174.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 189.80 ms. Allocated memory is still 196.1 MB. Free memory was 174.0 MB in the beginning and 163.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 457.07 ms. Allocated memory is still 196.1 MB. Free memory was 163.7 MB in the beginning and 137.1 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...